Bonjour,
[tex]3^3\times 3^5 = 3^{3+5} = 3^8\\
\frac{2^4}{2^5} = 2^{4-5} = 2^{-1} \\
6^3\times 5^3 = (6\times 5)^3 = 30^3\\
3^6\times 12^6 = (3\times 12)^6 = 36^6\\
\frac{3^2}{3^{-4}} = 3^{2-(-4)} = 3^{2+4} = 3^6\\
(-5)^{-4}\times (-5)^{-3} = (-5)^{-4 - 3} = (-5)^{-7}.[/tex]
